Influence of age on use of cardiac catheterization and associated outcomes in patients with non-ST-elevation acute coronary syndromes
AuthorsBagnall, Alan J.
Goodman, Shaun G.
Fox, Keith A. A.
Yan, Raymond T.
Gore, Joel M.
Cheema, Asim N.
Fitchett, David H.
Yan, Andrew T.
Canadian Acute Coronary Syndrome Registry I and II Investigators
Canadian Global Registry of Acute Coronary Events (GRACE/GRACE2) Investigators
UMass Chan AffiliationsDepartment of Medicine, Division of Cardiovascular Medicine
Center for Outcomes Research
Document TypeJournal Article
KeywordsAcute Coronary Syndrome; Age Factors; Aged; Coronary Angiography; Disease Management; Female; Heart Catheterization; Hospital Mortality; Humans; Logistic Models; Male; Middle Aged; Registries; Risk Assessment; Treatment Outcome
Health Services Research
MetadataShow full item record
AbstractRandomized controlled trials support the use of an early invasive strategy in high-risk patients with non-ST-segment elevation (NSTE) acute coronary syndromes (ACS). Although risk increases with age, limited data are available to support this strategy in older patients. The aims of this study were to examine temporal trends in the management and outcomes of NSTE ACS in elderly patients and to explore reasons for the lower use of early angiography in the aged population. Data from 11,732 patients with NSTE ACS were collected from 3 consecutive Canadian registries (ACS I, ACS II, and Global Registry of Acute Coronary Events [GRACE]/GRACE2) from 1999 to 2007. Rates of in-hospital cardiac catheterization, revascularization, infarction or reinfarction, and death were stratified by age (<65, 65 to 74, and > or = 75 years). Although overall, rates of in-hospital catheterization and revascularization increased over time (p <0.001), the largest increase occurred in patients aged <65 years. The strongest independent negative predictor of the use of cardiac catheterization was age > or = 75 years (adjusted odds ratio 0.45, 95% confidence interval 0.37 to 0.56, p <0.001). Use of an early invasive approach was associated with a reduction in 1-year mortality across all age groups, but the absolute difference was greatest in patients aged > or = 75 years. The underestimation of risk by physicians (ascertained in ACS II) was the most common reason for choosing a conservative strategy. In conclusion, despite an overall increased use of an early invasive strategy, elderly patients with NSTE ACS remain significantly less likely to undergo cardiac catheterization and revascularization and are often erroneously perceived to be at low risk by their physicians. Future studies should determine whether more aggressive treatment of these high-risk elderly patients improves outcomes.
SourceAm J Cardiol. 2009 Jun 1;103(11):1530-6. Epub 2009 Apr 8. Link to article on publisher's site
Permanent Link to this Itemhttp://hdl.handle.net/20.500.14038/27295
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Management patterns of non-ST segment elevation acute coronary syndromes in relation to prior coronary revascularizationElbarasi, Esam; Goodman, Shaun G.; Yan, Raymond T.; Welsh, Robert C.; Kornder, Jan; Wong, Graham C.; Dery, Jean-Pierre; Anderson, Frederick A. Jr.; Gore, Joel M.; Fox, Keith A. A.; et al. (2010-01-28)BACKGROUND: Contemporary guidelines support an early invasive strategy for non-ST elevation acute coronary syndrome (NSTE-ACS) patients who had prior coronary revascularization. However, little is known about the management pattern of these patients in "real world." METHODS: We analyzed 3 consecutive Canadian registries (ACS I, ACS II, and Global Registry of Acute Coronary Events [GRACE]/expanded-GRACE) that recruited 12,483 NSTE-ACS patients from June 1999 to December 2007. We stratified the study population according to prior coronary revascularization status into 4 groups and compared their clinical characteristics, in-hospital use of medications, and cardiac procedures. RESULTS: Of the 12,483 NSTE-ACS patients, 71.2% had no prior revascularization, 14.2% had percutaneous coronary intervention (PCI) only, 9.5% had coronary artery bypass graft surgery (CABG) only, and 5% had both PCI and CABG. Compared to their counterparts without prior revascularization, patients with previous PCI and/or CABG were more likely to be male, to have diabetes, myocardial infarction, and heart failure but less likely to have ST-segment deviation or positive cardiac biomarker on presentation. Early use of evidence-based medications was higher among patients with previous PCI only and lower among patients with previous CABG only. After adjusting for possible confounders including GRACE risk score, prior PCI was independently associated with in-hospital use of cardiac catheterization (adjusted odds ratio [OR] 1.18, 95% CI 1.04-1.34, P = .008). In contrast, previous CABG was an independent negative predictor (adjusted OR .77, 95% CI 0.68-0.87, P < .001). There was no significant interaction (P = .93) between previous PCI and CABG. CONCLUSIONS: The NSTE-ACS patients with previous PCI were more likely to be treated invasively. Conversely, patients with prior CABG less frequently received invasive therapy. Future studies should determine the appropriateness of this treatment discrepancy.
Unprotected left main revascularization in patients with acute coronary syndromesMontalescot, Gilles; Brieger, David; Eagle, Kim A.; Anderson, Frederick A. Jr.; Fitzgerald, Gordon; Lee, Michael S.; Steg, Phillippe Gabriel; Avezum, Alvaro; Goodman, Shaun G.; Gore, Joel M. (2009-09-02)AIMS: In acute coronary syndromes (ACS), the optimal revascularization strategy for unprotected left main coronary disease (ULMCD) has been little studied. The objectives of the present study were to describe the practice of ULMCD revascularization in ACS patients and its evolution over an 8-year period, analyse the prognosis of this population and determine the effect of revascularization on outcome. METHODS AND RESULTS: Of 43 018 patients enrolled in the Global Registry of Acute Coronary Events (GRACE) between 2000 and 2007, 1799 had significant ULMCD and underwent percutaneous coronary intervention (PCI) alone (n = 514), coronary artery bypass graft (CABG) alone (n = 612), or no revascularization (n = 673). Mortality was 7.7% in hospital and 14% at 6 months. Over the 8-year study, the GRACE risk score remained constant, but there was a steady shift to more PCI than CABG over time. Patients undergoing PCI presented more frequently with ST-segment elevation myocardial infarction (STEMI), after cardiac arrest, or in cardiogenic shock; 48% of PCI patients underwent revascularization on the day of admission vs. 5.1% in the CABG group. After adjustment, revascularization was associated with an early hazard of hospital death vs. no revascularization, significant for PCI (hazard ratio (HR) 2.60, 95% confidence interval (CI) 1.62-4.18) but not for CABG (1.26, 0.72-2.22). From discharge to 6 months, both PCI (HR 0.45, 95% CI 0.23-0.85) and CABG (0.11, 0.04-0.28) were significantly associated with improved survival in comparison with an initial strategy of no revascularization. Coronary artery bypass graft revascularization was associated with a five-fold increase in stroke compared with the other two groups. CONCLUSION: Unprotected left main coronary disease in ACS is associated with high mortality, especially in patients with STEMI and/or haemodynamic or arrhythmic instability. Percutaneous coronary intervention is now the most common revascularization strategy and preferred in higher risk patients. Coronary artery bypass graft is often delayed and performed in lower risk patients, leading to good 6-month survival. The two approaches therefore appear complementary.
Temporal trends in the use of invasive cardiac procedures for non-ST segment elevation acute coronary syndromes according to initial risk stratification.Jedrzkiewicz, Sean; Goodman, Shaun G.; Yan, Raymond T.; Welsh, Robert C.; Kornder, Jan; DeYoung, J. Paul; Wong, Graham C.; Rose, Barry; Grondin, Francois R.; Gallo, Richard; et al. (2009-11-01)BACKGROUND: Current guidelines support an early invasive strategy in the management of high-risk non-ST elevation acute coronary syndromes (NSTE-ACS). Although studies in the 1990s suggested that highrisk patients received less aggressive treatment, there are limited data on the contemporary management patterns of NSTE-ACS in Canada. OBJECTIVE: To examine the in-hospital use of coronary angiography and revascularization in relation to risk among less selected patients with NSTE-ACS. METHODS: Data from the prospective, multicentre Global Registry of Acute Coronary Events (main GRACE and expanded GRACE2) were used. Between June 1999 and September 2007, 7131 patients from across Canada with a final diagnosis of NSTE-ACS were included the study. The study population was stratified into low-, intermediate- and high-risk groups, based on their calculated GRACE risk score (a validated predictor of in-hospital mortality) and according to time of enrollment. RESULTS: While rates of in-hospital death and reinfarction were significantly (P<0.001) greater in higher-risk patients, the in-hospital use of cardiac catheterization in low- (64.7%), intermediate- (60.3%) and highrisk (42.3%) patients showed an inverse relationship (P<0.001). This trend persisted despite the increase in the overall rates of cardiac catheterization over time (47.9% in 1999 to 2003 versus 51.6% in 2004 to 2005 versus 63.8% in 2006 to 2007; P<0.001). After adjusting for confounders, intermediate-risk (adjusted OR 0.80 [95% CI 0.70 to 0.92], P=0.002) and high-risk (adjusted OR 0.38 [95% CI 0.29 to 0.48], P<0.001) patients remained less likely to undergo in-hospital cardiac catheterization. CONCLUSION: Despite the temporal increase in the use of invasive cardiac procedures, they remain paradoxically targeted toward low-risk patients with NSTE-ACS in contemporary practice. This treatment-risk paradox needs to be further addressed to maximize the benefits of invasive therapies in Canada.